An argument that uses (unsubstantiated) general opinions as its (false) basis is Bandwagoning type of fallacy.
Bandwagoning is known to be a term where state come together with another stronger state and it states that the stronger opponent turn friend prospers in the spoils they will have or take together.
Note that Bandwagoning is an argument that often employs the use of (unproven) general opinions as it is often on a (untrue) basis.
Learn more about fallacy from
https://brainly.com/question/20939336